<template>
  <div :class="className"
       :style="{height:height,width:width}" />
</template>

<script>
import echarts from 'echarts'
require('echarts/theme/dark-bold') // echarts theme
import resize from './mixins/resize'

const animationDuration = 6000

export default {
  mixins: [resize],
  props: {
    className: {
      type: String,
      default: 'chart'
    },
    width: {
      type: String,
      default: '100%'
    },
    height: {
      type: String,
      default: '300px'
    }
  },
  data() {
    return {
      chart: null
    }
  },
  mounted() {
    this.$nextTick(() => {
      this.initChart()
    })
  },
  beforeDestroy() {
    if (!this.chart) {
      return
    }
    this.chart.dispose()
    this.chart = null
  },
  methods: {
    initChart() {
      this.chart = echarts.init(this.$el, 'dark-bold')

      this.chart.setOption({
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            // 坐标轴指示器，坐标轴触发有效
            type: 'shadow' // 默认为直线，可选为：'line' | 'shadow'
          }
        },
        title: {
          text: '触发事件统计图',
          subtext: '最近一周',
          left: 'center',
          align: 'right'
        },
        grid: {
          top: 50,
          left: '2%',
          right: '2%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            type: 'category',
            data: ['周一', '周二', '周三', '周四', '周五', '周六', '周日'],
            axisTick: {
              alignWithLabel: true
            }
          }
        ],
        yAxis: [
          {
            type: 'value',
            axisTick: {
              show: false
            }
          }
        ],

        series: [
          {
            name: '次数',
            type: 'bar',
            stack: 'vistors',
            barWidth: '60%',
            data: [7, 5, 4, 3, 9, 1, 2],
            itemStyle: {
              normal: {
                //每根柱子颜色设置
                color: function(params) {
                  let colorList = [
                    '#c23531',
                    '#d48265',
                    '#d48265',
                    '#d48265',
                    '#c23531',
                    '#91c7ae',
                    '#91c7ae',
                    '#749f83',
                    '#ca8622',
                    '#bda29a',
                    '#6e7074',
                    '#546570',
                    '#c4ccd3',
                    '#4BABDE',
                    '#FFDE76',
                    '#E43C59',
                    '#37A2DA'
                  ]
                  return colorList[params.dataIndex]
                }
              }
            },
            animationDuration
          }
        ]
      })
    }
  }
}
</script>
